52172816640617 has 2 divisors, whose sum is σ = 52172816640618. Its totient is φ = 52172816640616.

The previous prime is 52172816640563. The next prime is 52172816640629. The reversal of 52172816640617 is 71604661827125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51262578524521 + 910238116096 = 7159789^2 + 954064^2 .

It is a cyclic number.

It is not a de Polignac number, because 52172816640617 - 2³² = 52168521673321 is a prime.

It is not a weakly prime, because it can be changed into another prime (52172816640647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26086408320308 + 26086408320309.

It is an arithmetic number, because the mean of its divisors is an integer number (26086408320309).

Almost surely, 2^{52172816640617} is an apocalyptic number.

It is an amenable number.

52172816640617 is a deficient number, since it is larger than the sum of its proper divisors (1).

52172816640617 is an equidigital number, since it uses as much as digits as its factorization.

52172816640617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 52172816640617 in words is "fifty-two trillion, one hundred seventy-two billion, eight hundred sixteen million, six hundred forty thousand, six hundred seventeen".